From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E06CC433FE for ; Thu, 23 Sep 2021 13:22:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 32B906103D for ; Thu, 23 Sep 2021 13:22:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241233AbhIWNYS (ORCPT ); Thu, 23 Sep 2021 09:24:18 -0400 Received: from smtp-out1.suse.de ([195.135.220.28]:38084 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231380AbhIWNYQ (ORCPT ); Thu, 23 Sep 2021 09:24:16 -0400 Received: from relay1.suse.de (relay1.suse.de [149.44.160.133]) by smtp-out1.suse.de (Postfix) with ESMTP id 0DD042233C; Thu, 23 Sep 2021 13:22:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1632403364; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=91EbWsxBIacBihnMY3CoyaclWbO8k6zHMaDGYXBGc6k=; b=bNsG0taIqEIQ78hUE8AudLqClVPQeCRPE7jUo9LBEmNK7lZ0EkyQrl65qWO8lRQQhQQL06 l/CERk6RdtnciK+35zRW+05oZ3HXwSufhzhli4LruvdHD536Puvu7562x//2t3BiU0ZSDy qe8mdE3p390N7qnbwf26hi+qTnPABbI= Received: from suse.cz (unknown [10.100.224.162]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay1.suse.de (Postfix) with ESMTPS id E240925D95; Thu, 23 Sep 2021 13:22:43 +0000 (UTC) Date: Thu, 23 Sep 2021 15:22:43 +0200 From: Petr Mladek To: Peter Zijlstra Cc: gor@linux.ibm.com, jpoimboe@redhat.com, jikos@kernel.org, mbenes@suse.cz, mingo@kernel.org, linux-kernel@vger.kernel.org, joe.lawrence@redhat.com, fweisbec@gmail.com, tglx@linutronix.de, hca@linux.ibm.com, svens@linux.ibm.com, sumanthk@linux.ibm.com, live-patching@vger.kernel.org, paulmck@kernel.org Subject: Re: [RFC][PATCH 0/7] sched,rcu,context_tracking,livepatch: Improve livepatch task transitions for idle and NOHZ_FULL cpus Message-ID: References: <20210922110506.703075504@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210922110506.703075504@infradead.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 2021-09-22 13:05:06, Peter Zijlstra wrote: > Hi, > > Compile tested only, please consider carefully, esp. the last few patches that > concern context_tracking and nohz_full. BTW: The patchset seems to significantly speed up livepatch selftests in tools/testing/selftests/livepatch. I haven't measured it. But I do not longer have to switch screen and do anything else. The transition speed is not our priority. But it is another nice win of this patchset. I only hope that we did not introduce any race ;-) Best Regards, Petr